9.20. 组网扩展

<dubbo:protocol networker="xxx" />
<!-- 缺省值设置，当<dubbo:protocol>没有配置networker属性时，使用此配置 -->
<dubbo:provider networker="xxx" />

• org.apache.dubbo.remoting.p2p.support.MulticastNetworker
• org.apache.dubbo.remoting.p2p.support.FileNetworker

• Maven 项目结构：

  src
   |-main
      |-java
          |-com
              |-xxx
                  |-XxxNetworker.java (实现Networker接口)
      |-resources
          |-META-INF
              |-dubbo
                  |-org.apache.dubbo.remoting.p2p.Networker (纯文本文件，内容为：xxx=com.xxx.XxxNetworker)
  

• XxxNetworker.java：

  package com.xxx;
  import org.apache.dubbo.remoting.p2p.Networker;
  public class XxxNetworker implements Networker {
      public Group lookup(URL url) {
          // ...
      }
  }
  

• META-INF/dubbo/org.apache.dubbo.remoting.p2p.Networker：

  xxx=com.xxx.XxxNetworker